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參數(shù)資料
| 型號(hào)： | SM8580 |
| 廠商： | Seiko NPC Corporation |
| 元件分類： | 溫度/濕度傳感器 |
| 英文描述： | Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor |
| 中文描述： | 實(shí)時(shí)時(shí)鐘集成電路溫度傳感器與4位接口和內(nèi)置 |
| 文件頁(yè)數(shù)： | 12/23頁(yè) |
| 文件大?。?/td> | 179K |
| 代理商： | SM8580 |
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SM8580AM
NIPPON PRECISION CIRCUITS—12
Control Registers (All Banks, Register E (bits 2, 3) and F)
I
TEST bit
Factory test bit.
This bit should be set to 0. Take care when writing
to other E register bits not to accidentally write 1
to the TEST bit. Automatically resets to 0 when
power (VDD) is applied.
I
TEMP bit
When set to 1, it enables the temperature sensor
voltage output on pin VTEMP. When set to 0,
VTEMP is high impedance. Automatically resets
to 0 when power is applied.
I
Bank SEL bits
Bank select bits for read/write operations.
I
STOP bit
When set to 1, the clock 32Hz frequency divider
counter stops and is reset. When set to 0, the clock
restarts.
I
BUSY/ADJ bit
This bit functions as a BUSY function in read
mode, and as an ADJ function in write mode.
ADJ function (±30 seconds adjust bit)
Second registers are reset to 00 and minute reg-
isters not incremented when the clock counter is
reset and the second registers are currently 00 to
29.
Second registers are reset to 00 and minute reg-
isters are incremented when the clock counter is
reset and the second registers are currently 30 to
59.
The ADJ bit is automatically reset to 0 a maxi-
mum of 244
μ
s after it is set to 1, and thus the
register should not be written to during this
244
μ
s interval.
BUSY function (second registers increment or
±30 seconds adjust busy indicator bit)
When BUSY is 1, the counters are being
updated (incremented or reset). To read or write
to clock and calendar registers, the BUSY flag
has to be 0. If reading data when BUSY is set to
1, there is a possibility that incorrect (intermedi-
ate) data will be output.
BUSY is set to 1 under the following two cir-
cumstances.
Bank
Address
Bit 3
Bit 2
Bit 1
Bit 0
0, 1, 2
E
TEST
TEMP
F
Bank SEL1
Bank SEL0
STOP
BUSY/ADJ
Bank SEL1
Bank SEL0
Accessed bank
0
0
Bank 0
0
1
Bank 1
1
0
Bank 2
1
1
Bank 1
Normal seconds digit carry
±30 seconds digit adjust (when ADJ is set to 1)
Carry complete
244
μ
s
Adjust function
complete
max 244
μ
s
Setting ADJ bit to "1"
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相關(guān)代理商/技術(shù)參數(shù) |
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|---|---|
| SM8580AM | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor |
| SM8580AM_06 | 制造商:NPC 制造商全稱:Nippon Precision Circuits Inc 功能描述:Real-time Clock IC with 4-bit Interface and Built-in Temperature Sensor |
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